Battery casing and battery assembly

Abstract

A battery casing and a battery assembly are disclosed. The battery casing has a casing body, a least one first stress-bearing element, and at least one second stress-bearing element. The casing body has two corresponding disposed first walls and a bearing surface. The at least one first stress-bearing element is disposed on the bearing surface. The two ends of the at least one second stress-bearing element connect with the two first walls and are situated above and aligned with the at least one first stress-hearing element to form at least one stress-bearing space for accommodating at least one battery.

What is claimed is: 
     
         1 . A battery casing for accommodating at least one battery, comprising:
 a casing body, comprising two oppositely disposed first side walls and a bearing surface;   at least one first stress-bearing element disposed on the bearing surface; and   at least one second stress-bearing element, two ends of which connect to the two first side walls respectively and are situated above and substantially aligned with the at least one first stress-bearing element such that at least one stress-bearing space for accommodating at least one battery is formed among the at least one first stress-bearing element, the at least one second stress-bearing element, and the casing body.   
     
     
         2 . The battery casing as claimed in  claim 1 , wherein the casing body further comprises two oppositely disposed second side walls, the two ends of the two second side walls connecting with the two first side walls respectively; a plane that is formed between the at least one second stress-bearing element and the at least one first stress-bearing element is parallel to the second side wall such that a stress-bearing space is formed between the plane and the second side wall. 
     
     
         3 . The battery casing as claimed in  claim 1 , wherein each of the two first side walls comprises an insertion groove for engaging with the second stress-bearing element. 
     
     
         4 . The battery casing as claimed in  claim 3 , wherein the insertion groove comprises a notch, whose location corresponds to the second stress-bearing element for allowing the two ends of the second stress-bearing element to enter the insertion groove via the notch; the second stress-bearing element comprises a main body, and the two ends of the main body both comprise a bended section and an engagement portion; the bended section touches against the notch, and a portion of the engagement portion inserts into the insertion groove after the two ends of the main body enter the insertion groove via the notch. 
     
     
         5 . The battery casing as claimed in  claim 1 , wherein the at least one first stress-bearing element is a plurality of first stress-bearing elements, the at least one second stress-bearing element is a plurality of second stress-bearing elements, and the at least one battery is a plurality of batteries, wherein each of the second stress-bearing elements is situated above and is aligned with each of the first stress-bearing elements correspondingly such that a plurality of stress-bearing spaces for accommodating each of the batteries individually are formed among each of the first stress-bearing elements, each of the second stress-bearing elements, and the casing body. 
     
     
         6 . The battery casing as claimed in  claim 5 , wherein the casing body comprises two oppositely disposed second side walls, and the two ends of the two second side walls connect with the two first side walls, respectively; a plane is formed between each of the second stress-bearing elements and each of the first stress-bearing elements, and each of the stress-bearing spaces is formed between any two adjacent planes or between the plane and an adjacent second side wall. 
     
     
         7 . The battery casing as claimed in  claim 3 , wherein each of the two first side walls has a recessing section for pressing the battery body from the two lateral sides of the battery body. 
     
     
         8 . The battery casing as claimed in  claim 7 , wherein a depth of the recessing section is equal to a width of the insertion groove. 
     
     
         9 . A battery assembly comprising:
 a casing body comprising two oppositely disposed first side walls and a bearing surface;   at least one first stress-bearing element disposed on the bearing surface;   at least one second stress-bearing element, wherein the two ends of the at least one second stress-bearing element connect to the two first side walls, respectively; the at least one second stress-bearing element is situated above and is substantially aligned with the at least one first stress-bearing element such that at least one stress-bearing space is formed among the at least one first stress-bearing element, the at least one second stress-bearing element, and the casing body; and   at least one battery accommodated in the stress-bearing space.   
     
     
         10 . The battery assembly as claimed in  claim 9 , the casing body further comprising two oppositely disposed second side walls, wherein the two ends of the two second side walls connect to the first side wall respectively and a plane that is formed between the at least one second stress-bearing element and the at least one first stress-bearing element is substantially parallel to the second side wall, and a stress-bearing space is formed between the plane and the second side wall. 
     
     
         11 . The battery assembly as claimed in  claim 9 , wherein each of the two first side walls comprises an insertion groove for engaging with the second stress-bearing element. 
     
     
         12 . The battery cell assembly as claimed in  claim 11 , wherein a notch is disposed in the insertion groove,whose location corresponds to the second stress-bearing element, for allowing two ends of the second stress-bearing element to enter the insertion groove via the notch; the second stress-bearing element comprises a main body, and each of the two ends of the main body comprises a bended section and an engagement portion, wherein the bended section presses against the notch and a portion of the engagement portion inserts into the insertion groove after the two ends of the main body enter the insertion groove via the notch. 
     
     
         13 . The battery assembly as claimed in  claim 11 , wherein the at least one battery further comprises a battery body, an upper cover, and a bottom cover, and the battery body comprises an electrode connecting surface and a bottom surface opposite to the electrode connecting surface, wherein the upper cover connects with the electrode connecting surface and the bottom cover connects with the bottom surface. 
     
     
         14 . The battery assembly as claimed in  claim 13 , wherein the at least one first stress-bearing element touches one end of the bottom cover and the at least one second stress-bearing element touches one end of the upper cover when the at least one battery is accommodated in the at least one stress-bearing space. 
     
     
         15 . The battery assembly as claimed in  claim 3 , wherein the at least one second stress-bearing element further comprises an extension section situated above the main body and the upper cover comprises a top surface; the extension section touches the top surface when the at least one battery is accommodated in the at least one stress-bearing space. 
     
     
         16 . The battery assembly as claimed in  claim 13 , wherein the at least one battery further comprises a first buffering pad and a second buffering pad;
 the first buffering pad touches the upper cover and the electrode connecting surface respectively, and the second buffering pad touches the bottom cover and the bottom surface, respectively.   
     
     
         17 . The battery assembly as claimed in  claim 9 , wherein the at least one first stress-bearing element is a plurality of first stress-bearing elements, the at least one second stress-bearing element is a plurality of second stress-bearing elements, and the at least one battery is a plurality of batteries, wherein each of the second stress-bearing elements is situated above and is aligned with each of the at least one first stress-bearing elements correspondingly, such that a plurality of stress-bearing spaces for accommodating the plurality of batteries individually are formed among each of the first stress-bearing elements, each of the second stress-bearing elements and the casing body. 
     
     
         18 . The battery assembly as claimed in  claim 17 , wherein the casing body comprises two oppositely disposed second side walls, and the two ends of the two second side walls connect with the two first side walls respectively; a plane that is formed between each of the first stress-bearing elements and each of the second stress-bearing elements correspondingly is substantially parallel to the second side wall, wherein each the stress-bearing spaces is formed between any two adjacent planes or between the plane and the adjacent second side walls. 
     
     
         19 . The battery cell assembly as claimed in  claim 18 , wherein each of the plurality of batteries comprises a battery body; when each of the battery is accommodated in each of the stress-bearing spaces correspondingly, any two of the adjacent battery bodies are separated by a gap. 
     
     
         20 . The battery assembly as claimed in  claim 11 , wherein each of the two first side walls comprises a recessing section for pressing the battery body.